dcrat | da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59

General

Target

da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
Size

829KB
MD5

cbadabd5f33ef27c7859a83fc1a2c973
SHA1

a155b4f7e2df225012b3f416ac13c2aab696f240
SHA256

da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59
SHA512

bf87a61b9a65f9c42d3bcf057ba08b328dffad7b50a49a34806a66585411849f4335336932fbfa88ec422995b394bbc4f4c326f6b9b0a4c0e28d8054057a8972
SSDEEP

24576:/8snXXpIYvwMS2AKO99fP7NvujxVMzMx:/8s1vmvM

Score

10^/10

dcrat infostealer rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Process spawned unexpected child process 18 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1960	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4392	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2736	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2940	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	732	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2620	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4756	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1724	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2536	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1148	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2416	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1740	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2384	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1520	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1284	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2704	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	860	4848	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3340	4848	schtasks.exe	82

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/3128-1-0x0000000000750000-0x0000000000826000-memory.dmp	dcrat
behavioral2/files/0x0009000000023bc4-11.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe

Executes dropped EXE 1 IoCs

pid	Process
3056	dllhost.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\PackageManifests\wininit.exe	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\56085415360792	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\9e8d7a4ca61bd9	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\lsass.exe	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
File created	C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\6203df4a6bafc7	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Offline Web Pages\fontdrvhost.exe	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
File created	C:\Windows\Offline Web Pages\5b884080fd4f94	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1724	schtasks.exe
2536	schtasks.exe
2384	schtasks.exe
4392	schtasks.exe
2940	schtasks.exe
732	schtasks.exe
2620	schtasks.exe
2704	schtasks.exe
3340	schtasks.exe
2736	schtasks.exe
4756	schtasks.exe
1148	schtasks.exe
1520	schtasks.exe
2416	schtasks.exe
1740	schtasks.exe
1284	schtasks.exe
860	schtasks.exe
1960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
3056	dllhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
Token: SeDebugPrivilege	3056	dllhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 4960	3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe	101
PID 3128 wrote to memory of 4960	3128	da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe	101
PID 4960 wrote to memory of 5076	4960	cmd.exe	103
PID 4960 wrote to memory of 5076	4960	cmd.exe	103
PID 4960 wrote to memory of 3056	4960	cmd.exe	104
PID 4960 wrote to memory of 3056	4960	cmd.exe	104

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe
"C:\Users\Admin\AppData\Local\Temp\da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\qkHk1eR75Z.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4960
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:5076
- - C:\Recovery\WindowsRE\dllhost.exe
    "C:\Recovery\WindowsRE\dllhost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3056

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1960

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4392

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2736

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Program Files\Microsoft Office\PackageManifests\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\PackageManifests\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:732

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Program Files\Microsoft Office\PackageManifests\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Windows\Offline Web Pages\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\Offline Web Pages\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1724

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Windows\Offline Web Pages\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\MusNotification.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1148

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\MusNotification.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2416

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\MusNotification.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2384

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1284

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:860

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\RuntimeBroker.exe

Filesize
829KB

MD5
cbadabd5f33ef27c7859a83fc1a2c973

SHA1
a155b4f7e2df225012b3f416ac13c2aab696f240

SHA256
da044c033d375095443875b680b1de847b251d30e55e68fb8e3735c25286bb59

SHA512
bf87a61b9a65f9c42d3bcf057ba08b328dffad7b50a49a34806a66585411849f4335336932fbfa88ec422995b394bbc4f4c326f6b9b0a4c0e28d8054057a8972

Download Submit
C:\Users\Admin\AppData\Local\Temp\qkHk1eR75Z.bat

Filesize
198B

MD5
abfe00b68820001c118ec7e1af9c435c

SHA1
7a8b450be12ddd6abfd5372862e7df1db9856091

SHA256
e8ee971e872d4a5cf321bbf3741bcadd07c437d8a43bc5905194390c985e7eb6

SHA512
87afee4ee393a592e7edc87be1f9cc5e361d846c91af22a0f851957682d315ef1f2ead5c275852ce85b32e6f39eda5c9e7594b40d04fe2a3b8b8a8f2028f3fd7

Download Submit
memory/3128-0-0x00007FF96A283000-0x00007FF96A285000-memory.dmp

Filesize
8KB

Download
memory/3128-1-0x0000000000750000-0x0000000000826000-memory.dmp

Filesize
856KB

Download
memory/3128-4-0x00007FF96A280000-0x00007FF96AD41000-memory.dmp

Filesize
10.8MB

Download
memory/3128-21-0x00007FF96A280000-0x00007FF96AD41000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads